Lock for slide fastener sliders



March 1, 1949. A. wEBER 2,463,074

` LOCK OR SLIDE FASTENER SLIDERS Filed Oct. 16, 1944 'IIIIIIIII/IIII.

2 a' I? V/////////////// INVENTOR ...f/1761 2! W BY m ` ATTORNEYSPatented Mar. 1, 1949 UNITED STATES PATENT OFFICE LOCK FOB SLIDEras-ranm sLmms e Albert Weber, Edgewood, R. I;

2 Cialms.

This invention relates to a slider ior slide fasteners and moreparticularly to a locking device for such slider.

Variouslocking devices have been provided for the slider of slidefasteners so as to prevent the slider from moving along the slidei'asteners to separate or close the same except when the lock iswithdrawn by some manual means. such lockingdevices frequently provide apoint to extend between the fasteners so as toprevent motion and thispoint. if not completely withdrawn as it slides over fasteners, maybecome dull and the point so worn as to become non-effective. In somecases locking constructions are made o! channel shaped parts requiringbending or drawing operations. In some cases the puil tab is flexiblyconnected to the slider in such a way 'that it may be pulled upon tomove the locking member to release position. Sometimes resilient meansare provided for moving the locking member in one direction, such forinstance as to locking position while depending upon the movement of thetab for swinging the locking member against th resiliency of the spring.

One of the objects of this invention is to Drovide a locking member fora slider which may be formed of a solid piece of material.

Another object of this invention is to provide a locking member for aslider which will have no teners i'or locking the same in position.

Another object of this invention is to`provide a positive means forholding a blunt or rounded end oi' a locking device against slidefasteners so as to appiy a sufficient pressure thereon to preventmovement of the slider body.

Another object of this invention is to provide an arrangement whereby noresilient means is required.

Another object of this invention is to provide a tab which mayeffectiveiy provide a lever' extension from the locking member formanipulating the locking member.

Another object of this invention is to provide a tab which may Swingwith reference to the locking member and act as a wedge to move thelocking member from locked position.

Another object of this invention is to provide a simple constructionwhich may be easily and `quickly assembied and the parts of which arerelatively simple that they may be made with a minimum of tooloperations.

With these and other objects in view, the invention consists of certainnove] features of construction, as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings:

Fig. l is a top plan view of a series of slide fasteners with a slidermounted thereon and the pull tab also shown in position; v

Application October 16, 1944, Serial No. 558,'196

2 i Fig. 2 is 'a sectional view on line 2--2 of Fig. 1: Fig. 3 is a viewshowing the locking member as moved by the tab to release position;

Fig. 4 is a. view similar to Fig. 3 but showing the tab as locked withthe locking member for moving the same to locking position;

Fig. 5 is a sectional view similar to Fig. 2 but ona greatly enlargedscale and with the slide i'asteners removed; i

Fig. 6 is a top plan view of the pull tab alone.

In proceeding with this invention a locking member is provided which' ispivoted on the slider and which may be moved by apull tab into aposition so that detent and' recess means will hold it in that position,such position being'that oi'` pressing against the slide fasteners toprevent movement of the slider. The construction is also arranged sothat when the tab is rocked through substantially ninety degrees` awedging action takes place between it and the locking member so as topry the locking member rrom locking position. The parts are such thatthey 'may be formed of solid construction and relatively strong althoughlight in` weight while at the same time they are of simple formation.

With reference to the drawings, I show a pair of fabric strips o and ilupon which thereis an edging I2 and each of which has mounted thereon aslide fastener I: of such a construction that the projecting part ll ofeach fastener will fit into a recess on the under side of a similarfastener on the opposite strip while itself receiving the' next adjacentfastener on the opposite strip in a well known 'mannen In order thatthese slide fasteners may be op- 'erated there is a slider i5 comprisinga' body formed of two plates IE and I'I held together by a suitable postConstruction s which acts as a fastener Separator. This slider isprovided with suitable fianges for guiding it in its movement forclosing or separation of the slide` fasteners. In the upper plate IS Iprovide a hole or opening 20 and upon this pi ate there is also providedears 2i between which a locking member 22 is pivoted on the pin 23. Thelocking member is shaped, as shown in Fig. 5, having a rounding portion25 having a portion 24 'extending therefrom so as to i engage the plates and form a stop limiting the rocking movement about the pivot in onedirec- 4 tion. The opposite end of this member 22 is provided with aslot 26 formed partially by a hook 21 and leaving an opening 28 fromthis slot on the side toward the plate IS. One wall 29 of this slot 26is substantially straight while the wall 39 of the slot 26 which alsoforms an edge of the on the plate !6 adjacent the opening 20. When.

these parts are in engagement the locking mem- 2,4eaov4 ber is heldflrmy against the slide !asteners to prevent a movement of the slidertherealong.

The pull tab' designated generally 35 consists ot a rectangular sheet ofstock which has 'a hoe !I punched therein. The width of' this hole 36 isof &dimension to receive the member 32 therethrough while the crosspiece 31 between one end of the hole and the end 38 of the pull tab isof a dimension to oosely fit within the slot 26. This i portion 31 willengage at its end 38 with the straight wall 29 while at a point inwardlyfrom its edge 39 it willengage and rock about the rounded surface 30,until its edge 39 is in engage-' ment with the end 40 of :the slot 26.The sizing of the parts is suchas to provide -substantially &three-pointcontact at'spacedlocations for the pul] tab andthe locking member 22sothat this puil tab acts as. a lever extension of the locking memberwhichin its movement toward closing position, 'is substantiallyrigid andwill move the locking member 22 so that the detent will snap by therounded end Al of. the hook and will enter. the recess 31 to holdthe'locking member rmly in locking position. 4

The ope in 28 is of 'suchfa size and the rounded surfacefso lsof suchshape that when thepull tab 35 is moved upwardly its end 38 will leavethe surface 29 'and it wilLrock about the surface 39 until its corner 43passes through the opening'zs and engages the plate l6.- At this pointthe corner of the edge 39 will engage the upper straight surface 29 ofthe recess or slot and by continued upward movement of the pull tab 35these diagonally opposite corners will slide along the surfaces whichthey engage acting. as a pry or wedge to swingthe member 22 clockwiseabout its pivot thus withdrawing the hookshaped'portion which pressesagainst the slide asteners from engagement therewith and move ing thisrecess and detent out of engagement. When the lockin'g member has beenso positioned the slider will be free 'to move along the slide rastenersin either direction. i g

In order that the pul] tab may serve to move the slide fasteners to-openposition the limiting stop 24 which engages the plate IS serves verywell to prevent too great an opening or swinging of the locking memberandrthus this locking member may be used as a means for holding the pulltabs so that it may act for applying pres- I scribed comprising a sliderbody, a locking member pivoted on.said body and having a lockingprojection of a length greater than the spacing between adjacentinteriocking elements' of the fastener toengage the slide fasteners,'readily separabe latching means between said member and body to holdsaid member against said slide fasteners in locking position, saidlocking member being provided with a slot, a pull tab having a portionto enter said slot and engage the wall-s thereof on opposite sides andat one end thereof for in eflect providing a continuation of the mem- Vprojectionato engage' the slide fasteners, readily releasable latchingmeans between said member. and body to hold said member against saidslide fasteners in locking position. said locking member beingprovidedawith a slot having an open end, ta pull tab having a portion toenter said slot and engagethe walls thereof on opposite sides and ,atone end thereof for in efl'ect providing a continuation of the member asalever for rockingthe member to locked position, said latchingmeansbeing readily `operable upon rocking of the member, said slotopening on the side toward the body for engagement of the end of the tabwith the body, said tab being of a size to act as a wedge between thebody and wall of the slottto pry the member from locking ,position uponrocking the tab away from the body.

ALBERT ;WEBER REFERENCES CITE) I The following references are of recordin the file of this patent? UNITED STATES PATENTS Number Name Date1,776,142 A Binns Sept. 16, 1930 1,966,468 Sundback et al. July 17, 19342,131,567 Marinsky Sept. 27, 1938 2,271,14l Lange Jan. 27, 1942 FOREIGNPATENTS Number y Country Date 202335 Switzerland May 1, 1939 355374Italy Jan. 19. 1938 782304 France 1935

